Home > News > Counterfeiting Countermeasures
June 11th, 2007
He sees a lot of potential in nanotechnology, including nanocrystals that can be used to make pigments that aren't easy to duplicate and have spectral properties that can be easily verified by machine. "Unlike regular organic pigment molecules," he explains, nanocrystal pigments "have very narrow absorption windows." Nanocrystals made of semiconductor materials such as cadmium telluride and zinc sulfide or of metals such as gold and silver are already available. Color can be tuned by changing the size of the particles.
The committee also thinks lithography on a minute scale shows promise as a deterrent, Trevor says. Techniques including dip-pen lithography—in which the stylus of an atomic force microscope is used as a pen—could be used to print currency with text, images, or other patterns with dimensions in the nanometer to micrometer range. Such features could be viewed with a scanning optical microscope.
Editorial: Choices for Congress September 9th, 2010
Stephen Hawking - 'Don't Talk to Aliens' April 26th, 2010
It’s about damn time: Medvedev bans nanodemocracy April 15th, 2010
Savor maple syrup time in Ohio: Travel in 3s February 20th, 2010
Novel approach to magnetic measurements atom-by-atom October 1st, 2014
'Stealth' nanoparticles could improve cancer vaccines October 1st, 2014
Stressed Out: Research Sheds New Light on Why Rechargeable Batteries Fail October 1st, 2014
New Absorber Will Lead to Better Biosensor: Biosensors are more sensitive and able to detect smaller changes in the environment October 1st, 2014
Japanese gold leaf artists worked on a nano-scale: Study demonstrates X-ray fluorescence spectroscopy is a non-destructive way to date artwork July 3rd, 2014
Harry Potter-style invisibility cloaks: A real possibility next Christmas? Forget socks and shaving foam, the big kids of tomorrow want an invisible cloak for Christmas December 19th, 2013
Chicago Awareness Organization First Not-for-Profit to Sponsor Dog Training to Detect Ovarian Cancer Odorants December 12th, 2013
ZEISS Microscopes used to create images for Art Exhibit at Midway Airport: Art of Science: Images from the Institute for Genomic Biology October 25th, 2013